We are experiencing a problem with a custom board booting into linux from NAND flash. We would like to get some indication whether the board is actually loading x-loader and/or u-boot. The console UART is totally unresponsive, but we suspect that is due to our configuration. We have GPIO pins connected to LEDs which we have verified as functional using the Flash 1.6 utility. Can we use the gpio_... functions in the x-loader or u-boot to turn on one of our LEDs? If so, how do we determine what number to give to these functions to address lines in GPIO bank 3, which is where our LEDs are connected? Any help with this would be sincerely appreciated.
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